CN214118931U - Gear shifting mechanism of gear box for time-sharing four-wheel-drive all-terrain vehicle - Google Patents

Abstract

The utility model discloses a gear shifting mechanism of gear box for time-sharing four-wheel drive all-terrain vehicle, which comprises an input shaft assembly, a transmission assembly, a gear shifting fork assembly, a front output shaft assembly and a rear output shaft assembly, wherein the input shaft assembly comprises an input shaft and an input gear; the transmission assembly comprises an intermediate shaft, an intermediate shaft pinion, an intermediate shaft bull gear and an intermediate shaft bevel gear; the large gear of the intermediate shaft is correspondingly meshed with the input gear; the shifting fork assembly comprises a fork body, a joint sleeve and a fork shaft, wherein the joint sleeve is arranged at one end of the fork body and is sleeved on the middle shaft in a sliding manner; the shifting fork shaft is vertically and fixedly connected to one end of the shifting fork body relative to the shifting fork body and drives the shifting fork body and the joint sleeve to move; the front output shaft assembly comprises a front output shaft and a front output shaft bevel gear arranged at one end of the front output shaft; the front output shaft bevel gear is meshed with the intermediate shaft bevel gear; the rear output shaft assembly comprises a rear output shaft and a rear output shaft gear, and the rear output shaft gear is correspondingly meshed with the intermediate shaft pinion to drive the rear output shaft to rotate.

Description

Gear shifting mechanism of gear box for time-sharing four-wheel-drive all-terrain vehicle

Technical Field

The utility model relates to the technical field of machinery, concretely relates to gear shifting mechanism of gear box for all terrain vehicle is driven four times in a time sharing.

Background

All Terrain Vehicles (ATV), known by the english name of All terrain vehicles, are a special vehicle, and are classified broadly into the following three categories around the world: 1. super All Terrain Vehicle (SATV)2 for special terrain, civil all terrain off-road vehicle 3, military all terrain vehicle. Atvs can travel on terrain that is difficult to control by ordinary vehicles. The vehicle type is simple and practical, is specially used for overcoming severe conditions and special terrains, and has good cross-country performance and the whole appearance without a rain cover. Under such conditions, the adhesion force of the ground to wheels cannot be fully utilized, the ground gripping limit is low, and the vehicle body is unstable, and meanwhile, the higher safety and trafficability characteristic of the vehicle cannot be guaranteed.

Therefore, the technical problem to be solved by the present invention is how to provide a transmission assembly and a gear shifting mechanism of a gear box for a time-sharing four-wheel-drive all-terrain vehicle, which are convenient for a driver to manually switch a driving mode so that a two-wheel-drive vehicle can fully utilize the adhesion force of the ground to the wheels.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a time-sharing four-wheel drive is gearshift of all terrain vehicle gear box for the driver of being convenient for manually switches the drive mode for two drive make full use of ground to the adhesive force of wheel, make all terrain vehicle go stably.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a gear shifting mechanism of a gear box for a time-sharing four-wheel-drive all-terrain vehicle comprises an input shaft assembly, a transmission assembly, a gear shifting fork assembly, a front output shaft assembly and a rear output shaft assembly, wherein the input shaft assembly comprises an input shaft and an input gear fixedly installed at one end part of the input shaft; the other end of the input shaft is in transmission connection with an automobile power source; the transmission assembly comprises an intermediate shaft, an intermediate shaft pinion, an intermediate shaft gearwheel and an intermediate shaft bevel gear, wherein the intermediate shaft pinion, the intermediate shaft gearwheel and the intermediate shaft bevel gear are sequentially and rotatably mounted, fixedly mounted and rotatably mounted on the intermediate shaft from one end to the other end; the intermediate shaft gearwheel is correspondingly meshed with the input gear; the gear-shifting fork assembly comprises a fork body, a joint sleeve and a fork shaft, wherein the joint sleeve is rotatably arranged at one end of the fork body and is sleeved on the intermediate shaft in a sliding manner; the joint sleeve and the shifting fork body are positioned between the intermediate shaft bull gear and the intermediate shaft bevel gear; the shifting fork shaft is parallel to the middle shaft and is vertically fixed at one end of the shifting fork body; the front output shaft assembly comprises a front output shaft and a front output shaft bevel gear arranged at one end of the front output shaft; the front output shaft bevel gear is correspondingly meshed with the intermediate shaft bevel gear; the rear output shaft assembly comprises a rear output shaft and a rear output shaft gear installed at one end of the rear output shaft assembly, and the rear output shaft gear is correspondingly meshed with the intermediate shaft pinion to drive the rear output shaft to rotate.

The utility model has the advantages that: through installation shift fork body and clutch collar on the jackshaft for operating personnel operates the shift fork axle easily and drives clutch collar and jackshaft bevel gear joint transmission power to preceding output shaft, realizes the rotation of preceding output shaft, and jackshaft gear wheel and back output shaft gear are the constant mesh mode, because the rotation of preceding output shaft can constitute four-wheel drive mode with the back output shaft, increase all terrain vehicle stability of traveling.

Preferably, the surface of the intermediate shaft is provided with a plurality of spline grooves along the axial direction thereof, and the intermediate gearwheel, the intermediate pinion and the engaging sleeve are respectively and correspondingly mounted in the spline grooves; the intermediate shaft bevel gear is mounted at one end of the intermediate shaft.

Preferably, the intermediate shaft bevel gear is mounted at one end of the intermediate shaft through a needle bearing; and one side of the intermediate shaft bevel gear is provided with engaging teeth which correspondingly engage with the engaging sleeve.

Preferably, a shaft circlip is arranged at one end of the needle bearing mounted on the intermediate shaft to position the needle bearing.

Preferably, still include the main casing, input shaft subassembly, transmission assembly and back output shaft subassembly are installed correspondingly in the main casing, and the one end of input shaft and back output shaft extends respectively the main casing both sides.

Preferably, the device further comprises a secondary shell, wherein the secondary shell is fixedly arranged on one side of the main shell; the front output shaft assembly and the gear shifting fork assembly are correspondingly installed in the auxiliary shell, one end of the front output shaft and one end of the gear shifting fork shaft correspondingly extend out of the auxiliary shell respectively, and the fork body and the joint sleeve are sleeved in the auxiliary shell to slide.

Preferably, the gear shifting fork further comprises a gear shifting pull rod, a spring and a steel ball, wherein the gear shifting pull rod is movably connected to the end part of one end of the shifting fork shaft, the spring is sleeved on the shifting fork shaft in a penetrating manner, and one end of the spring is abutted to the shifting fork body; the auxiliary shell is provided with a positioning hole; the steel ball is fixedly arranged on the shifting fork shaft corresponding to the positioning hole and is abutted against the other end of the spring to limit free movement of the shifting fork shaft.

Preferably, one end of the auxiliary shell is provided with a flange plate, a plurality of threaded holes are uniformly formed in the flange plate, and bolts penetrate through the threaded holes in the auxiliary shell and are fixedly connected with the main shell.

Preferably, the intermediate shaft pinion, the intermediate shaft bull gear, the intermediate shaft bevel gear and the joint sleeve are positioned on the intermediate shaft through a gasket and a shaft sleeve respectively.

Preferably, the intermediate shaft pinion is mounted on one end of the intermediate shaft through a one-way bearing.

Drawings

Fig. 1 is a schematic view of the overall structure of a gear shifting mechanism of a gear box for a time-sharing four-wheel drive all-terrain vehicle according to the present invention;

FIG. 2 is a schematic view of a shift mechanism intermediate shaft of the gear box for a time-sharing four-wheel drive all-terrain vehicle of the present invention;

FIG. 3 is an assembly view of a gear shift assembly of a gear box for a time-sharing four-wheel-drive all-terrain vehicle according to the present invention;

FIG. 4 is a schematic diagram showing the front output shaft of the gear shifting mechanism and the transmission assembly of the gear box for a time-sharing four-wheel-drive all-terrain vehicle according to the present invention;

fig. 5 is a first schematic view of a shift mechanism auxiliary housing mechanism of the gear box for the time-sharing four-wheel drive all-terrain vehicle of the utility model;

FIG. 6 is the utility model discloses a time-sharing four-wheel drive is sub-shell mechanism sketch map of gearshift of all terrain vehicle gear box two

FIG. 7 is a side view of the gear shift engaging sleeve and the intermediate shaft of the gear box for a time-sharing four-wheel-drive all-terrain vehicle of the present invention;

FIG. 8 is a front view of the gear shift engaging sleeve and the intermediate shaft of the gear box for a time-sharing four-wheel-drive all-terrain vehicle of the present invention;

fig. 9 is a first schematic view of the gear shift mechanism auxiliary housing and the shifting fork body of the gear box for the time-sharing four-wheel-drive all-terrain vehicle of the present invention;

fig. 10 is the utility model discloses a time-sharing four-wheel drive is vice casing of gearshift and shift fork body split sketch map two of all terrain vehicle gear box.

1 input shaft assembly, 101 input shaft, 102 input gear, 2 transmission assembly, 201 intermediate shaft, 202 intermediate shaft pinion, 203 intermediate shaft bull gear, 204 intermediate shaft bevel gear, 3 shift fork assembly, 301 fork body, 302 engaging sleeve, 303 fork shaft, 4 front output shaft assembly, 401 front output shaft, 402 front output shaft bevel gear, 5 rear output shaft assembly, 501 rear output shaft, 502 rear output shaft gear, 6 spring, 7 steel ball, 8 needle bearing, 9 one-way bearing, 10 gasket, 11 shaft circlip, 12 auxiliary shell, 13 shaft sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to the drawings of the utility model 1 to 10, according to the embodiment of the utility model, the gear shifting mechanism of the gear box for the time-sharing four-wheel drive all-terrain vehicle comprises an input shaft assembly 1, a transmission assembly 2, a gear shifting fork assembly 3, a front output shaft assembly 4 and a rear output shaft assembly 5, wherein the input shaft assembly 1 comprises an input shaft 101 and an input gear 102 fixedly installed at one end part of the input shaft; the input shaft 101 is in transmission connection with an automobile power source; the transmission assembly 2 comprises an intermediate shaft 201, an intermediate shaft pinion 202, an intermediate shaft gearwheel 203 and an intermediate shaft bevel gear 204, wherein the intermediate shaft pinion 202, the intermediate shaft gearwheel 203 and the intermediate shaft bevel gear 204 are sequentially and rotatably mounted from one end to the other end and are fixedly and rotatably mounted on the intermediate shaft 201; the intermediate shaft gearwheel 203 is correspondingly meshed with the input gear 102; the gear-shifting fork assembly 3 comprises a fork body 301, a joint sleeve 302 and a fork shaft 303, wherein the joint sleeve 302 is rotatably arranged at one end of the fork body 301 and is sleeved on the intermediate shaft in a sliding manner, and the fork shaft and the joint sleeve are positioned between the large gear of the intermediate shaft and the bevel gear of the intermediate shaft; the shifting fork shaft 303 is vertically and fixedly connected to one end of the shifting fork body 301 relative to the shifting fork body and drives the shifting fork body and the joint sleeve to move on the intermediate shaft; the front output shaft assembly 4 comprises a front output shaft 401 and a front output shaft bevel gear 402 arranged at one end of the front output shaft; the front output shaft bevel gear 402 is correspondingly meshed with the intermediate shaft bevel gear 204; the rear output shaft assembly 5 comprises a rear output shaft 501 and a rear output shaft gear 502 mounted at one end of the rear output shaft, and the rear output shaft gear 502 is correspondingly meshed with the intermediate shaft pinion 202 to drive the rear output shaft to rotate.

In some embodiments, the surface of the intermediate shaft 201 is provided with a plurality of spline grooves along the axial direction thereof, and the intermediate large shaft gear 203, the intermediate shaft pinion 202 and the engaging sleeve 302 are respectively installed in the spline grooves; a counter bevel gear 204 is mounted on one end of the counter 201.

In other embodiments, the countershaft bevel gear 204 is mounted on one end of the countershaft 201 by a needle bearing 8; one side of the jackshaft bevel gear 204 has an engaging tooth that correspondingly engages the engaging sleeve.

In other embodiments, the needle roller bearing 8 is provided with a shaft circlip 11 at one end of the intermediate shaft 201 to position the needle roller bearing 8.

In other embodiments, the device further comprises a main housing, the input shaft assembly 1, the transmission assembly 2 and the rear output shaft assembly 5 are correspondingly installed in the main housing, and one end of the input shaft and one end of the rear output shaft respectively extend out of two sides of the main housing.

In other embodiments, the device further comprises a secondary shell 12, wherein the secondary shell 12 is fixedly arranged on one side of the main shell; the front output shaft assembly 4 is correspondingly installed in the auxiliary housing 12, one end of the front output shaft 401 extends out of the auxiliary housing 12, and the shifting fork body 301 drives the coupling sleeve 302 to slide in the auxiliary housing 12 to realize engagement and disengagement with the front output shaft bevel gear.

In other specific embodiments, the gear shifting device further comprises a gear shifting pull rod, a spring 6 and a steel ball 7, wherein the gear shifting pull rod is movably connected to the end part of one end of the shifting fork shaft 303, the spring 6 is sleeved on the shifting fork shaft 303 in a penetrating manner, and one end of the spring is abutted to the shifting fork body; the auxiliary shell 12 is provided with a positioning hole; the steel ball 7 is fixedly arranged on the shifting fork shaft 303 corresponding to the positioning hole and is abutted against the other end of the spring 6, so that the free movement of the shifting fork shaft 303 is limited.

In other embodiments, a flange is disposed at one end of the secondary housing 12, a plurality of threaded holes are uniformly formed in the flange, and bolts pass through the threaded holes of the secondary housing 12 to be fixedly connected to the main housing.

In other embodiments, the countershaft pinion 202, countershaft bull gear 203, countershaft bevel gear 204, and clutch collar 302 are positioned on the countershaft by shims and bushings, respectively.

In other embodiments, the intermediate shaft pinion 202 is mounted on one end of the intermediate shaft 201 by a one-way bearing 9.

The utility model discloses a theory of operation and working process:

the utility model discloses under two modes of driving, the power transmission route is input shaft, jackshaft, back output shaft. At the moment, the joint sleeve is not jointed with the bevel gear of the intermediate shaft, the joint sleeve rotates along with the spline of the intermediate shaft, and the shifting fork body does not rotate. The countershaft bevel gear is only passively rotated by the rotation of the countershaft and does not transmit power to the front output shaft. When the four-wheel drive mode needs to be switched, the shifting fork body is shifted through the gear shifting pull rod to drive the joint sleeve to move to be correspondingly jointed with joint teeth of the intermediate shaft bevel gear, at the moment, the joint sleeve rotates together with the intermediate shaft bevel gear, and as the intermediate shaft bevel gear and the front output shaft bevel gear are in a normally meshed state, power is transmitted to the front output shaft at the moment, the front output shaft rotates, and the power can be transmitted to the front output shaft through the input shaft, the intermediate shaft gear wheel, the intermediate shaft, the joint sleeve and the intermediate shaft bevel gear in sequence, so that the power is transmitted to the front output shaft again. Thus, four-wheel drive power transmission can be performed. If the two-drive mode needs to be changed back, the shifting fork body is shifted again through the shifting pull rod to drive the joint sleeve to move and separate from the bevel gear of the intermediate shaft, so that free change between four-drive and two-drive is completed.

For the device and the using method disclosed by the embodiment, the description is simple because the device and the using method correspond to the method disclosed by the embodiment, and the relevant points can be referred to the description of the method part.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The gear shifting mechanism of the gear box for the time-sharing four-wheel-drive all-terrain vehicle is characterized by comprising an input shaft assembly (1), a transmission assembly (2), a gear shifting fork assembly (3), a front output shaft assembly (4) and a rear output shaft assembly (5), wherein the input shaft assembly (1) comprises an input shaft (101) and an input gear (102) fixedly mounted at one end of the input shaft, and the other end of the input shaft (101) is in transmission connection with an automobile power source;

the transmission assembly (2) comprises an intermediate shaft (201), an intermediate shaft pinion (202), an intermediate shaft gearwheel (203) and an intermediate shaft bevel gear (204), wherein the intermediate shaft pinion (202), the intermediate shaft gearwheel (203) and the intermediate shaft bevel gear (204) are respectively and correspondingly rotated, fixed and rotatably mounted on the intermediate shaft (201) from one end to the other end; the middle shaft gearwheel (203) is correspondingly meshed with the input gear (102);

the gear-shifting fork assembly (3) comprises a fork body (301), a joint sleeve (302) and a fork shaft (303), wherein the fork body (301) is sleeved above the intermediate shaft; the joint sleeve (302) is rotatably arranged at one end part of the shifting fork body (301); the shifting fork body (301) and the joint sleeve (302) are positioned between the large gear of the intermediate shaft and the bevel gear of the intermediate shaft; the shifting fork shaft (303) is parallel to the middle shaft and is vertically fixed at the other end of the shifting fork body (301);

the front output shaft assembly (4) comprises a front output shaft (401) and a front output shaft bevel gear (402) arranged at one end of the front output shaft; the front output shaft bevel gear (402) is correspondingly meshed with the intermediate shaft bevel gear (204); the rear output shaft assembly (5) comprises a rear output shaft (501) and a rear output shaft gear (502) mounted at one end of the rear output shaft assembly, and the rear output shaft gear (502) is correspondingly meshed with the intermediate shaft pinion (202) to drive the rear output shaft to rotate.

2. The gear shifting mechanism of the gear box for the time-sharing four-wheel drive all-terrain vehicle as claimed in claim 1, characterized in that the surface of the intermediate shaft (201) is provided with a plurality of spline grooves along the axial direction thereof, and the intermediate shaft gearwheel (203), the intermediate shaft pinion (202) and the engaging sleeve (302) are respectively and correspondingly installed in the spline grooves; the intermediate shaft bevel gear (204) is installed at one end of the intermediate shaft (201).

3. The gear shifting mechanism of a gearbox for a time-division four-wheel-drive all-terrain vehicle according to claim 2, characterized in that the countershaft bevel gear (204) is mounted at one end of the countershaft (201) by means of a needle bearing (8); one side of the intermediate shaft bevel gear (204) is provided with engaging teeth, and the engaging teeth are correspondingly meshed with the engaging sleeve.

4. The gear shift mechanism of a gearbox for a time-sharing four-wheel-drive all-terrain vehicle according to claim 3, characterized in that one end of the needle bearing (8) on the intermediate shaft (201) is provided with a shaft circlip (11) for positioning the needle bearing (8).

5. The gear shifting mechanism of the gear box for the time-sharing four-wheel-drive all-terrain vehicle as claimed in claim 1, further comprising a main housing, wherein the input shaft assembly (1), the transmission assembly (2) and the rear output shaft assembly (5) are correspondingly installed in the main housing, and one end of the input shaft and one end of the rear output shaft respectively extend out of two sides of the main housing.

6. The gear shifting mechanism of the gearbox for the time-sharing four-wheel-drive all-terrain vehicle according to claim 5, characterized by further comprising a secondary housing (12), wherein the secondary housing (12) is fixedly installed on one side of the main housing; preceding output shaft subassembly (4) and the fork assembly that shifts are installed correspondingly in vice casing (12), the one end of preceding output shaft (401) and fork shaft (303) is corresponding respectively and is stretched out vice casing (12), just shift fork body (301) are in drive in vice casing (12) joint sleeve (302) slide.

7. The gear shifting mechanism of the gearbox for the time-sharing four-wheel-drive all-terrain vehicle as claimed in claim 6, further comprising a gear shifting pull rod, a spring (6) and a steel ball (7), wherein the gear shifting pull rod is movably connected to one end of the shift fork shaft (303), the spring (6) is sleeved on the shift fork shaft (303), and one end of the spring abuts against the shift fork body (301); the auxiliary shell (12) is provided with a positioning hole; the steel ball (7) is fixedly mounted on the shifting fork shaft (303) corresponding to the positioning hole and abuts against the other end of the spring (6), and free movement of the shifting fork shaft (303) is limited.

8. The gear shifting mechanism of the gear box for the time-sharing four-wheel drive all-terrain vehicle as claimed in claim 6, characterized in that a flange is arranged at one end of the secondary housing (12), a plurality of threaded holes are uniformly formed in the flange, and bolts penetrate through the threaded holes in the secondary housing (12) to be fixedly connected with the main housing.

9. The gear shifting mechanism of a gearbox for a time-division four-wheel-drive all-terrain vehicle according to claim 1, characterized in that the countershaft pinion (202), countershaft bull gear (203), countershaft bevel gear (204) and clutch collar (302) are positioned on the countershaft by a spacer (10) and a bushing (13), respectively.

10. The gear shifting mechanism of a gearbox for a time-division four-wheel-drive all-terrain vehicle according to claim 1, characterized in that the countershaft pinion (202) is mounted on one end of the countershaft (201) by a one-way bearing (9).

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